Publications by authors named "Mohamed Moukhlissi"

Adenoid cystic carcinoma (ACC) of the submandibular gland is a rare and highly aggressive malignancy, distinguished by its tendency for perineural invasion and distant metastasis, particularly to the lungs and bones. The management of ACC is challenging due to its biological variability and the absence of specific randomized controlled trials to guide treatment. This report aims to encapsulate the clinical features, histological profile, diagnostic workup, and management options for submandibular gland ACC, with an emphasis on recent advancements in understanding and treatment.

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Article Synopsis
  • Extramedullary solitary plasmacytoma (SP) is a rare tumor, especially in the head and neck regions, as demonstrated in a case involving an 82-year-old man with nasal cavity SP.
  • The patient was found to have an advanced tumor unfit for surgery and initially received radiotherapy at a total dose of 50 Gy.
  • After nine months, the tumor recurred, leading to palliative chemotherapy with cyclophosphamide, dexamethasone, and thalidomide, which showed a positive treatment response, highlighting the complexities of diagnosing and treating SP in unusual locations.
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The Sister Mary Joseph syndrome is characterized by cutaneous metastases localized at the umbilical level. It is a rare clinical sign estimated to occur in 1%-3% of patients with abdominopelvic cancer. The most common histology is adenocarcinoma (75% of cases).

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Cancer of the scrotum is a rare tumor. It is often not diagnosed early, and its treatment poses difficulties for practicing oncologists. We report the case of a patient treated for locally advanced squamous cell carcinoma (SCC) of the scrotum, with a review of the literature.

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Conjunctival melanoma is a rare but aggressive condition that can arise from healthy conjunctiva, pre-existing nevi, or precancerous conditions like Reese's melanosis. This acquired primary conjunctival melanosis can significantly impact an individual's quality of life due to its potential for recurrence and metastasis. Effective treatment typically requires a multidisciplinary approach to optimize outcomes.

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Perianal basal cell carcinoma (BCC) is a rare occurrence, with limited documented cases in the existing literature. The precise etiology contributing to its onset remains inadequately elucidated. Macroscopically, perianal BCC often exhibits atypical features, potentially leading to diagnostic challenges.

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Primary central nervous system (CNS) lymphoma is a rare and aggressive form of extranodal non-Hodgkin's lymphoma, limited to the brain, eyes, spinal cord, or leptomeninges without systemic involvement. This group of malignant tumors is characterized by a particular diagnostic, therapeutic, and evolutionary profile compared to other types of non-Hodgkin's lymphomas. We report a case of a young patient treated in our university hospital center for primary cerebral lymphoma who benefited from primary chemotherapy and then consolidation radiotherapy with good disease control and good tolerance.

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Secretory breast carcinoma (SBC) is an extremely rare entity of breast cancer, which can affect all age groups. The diagnosis is based on the characteristic microscopic appearance, and despite the triple negativity or low hormone receptor positivity, SBC is generally characterized by a favorable prognosis. Due to the rarity of the disease, no clear consensus on optimal treatment is available.

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Article Synopsis
  • * Diagnostic confirmation was achieved through immunohistochemical analysis, and imaging revealed metastatic disease, leading to palliative chemotherapy after initial radiotherapy.
  • * For VM, surgery is typically the standard treatment for early stages, whereas advanced cases require immunotherapy and targeted therapy; ongoing clinical trials and expert collaboration are crucial for improving understanding and management strategies.
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Paragangliomas are sympathetic and parasympathetic para-ganglia neuroendocrine tumors of the autonomic nervous system. We analyzed a bifocal paraganglioma case of a 52-year-old patient in December 2013 with hearing loss and right ear pain, headaches, episodes of vomiting, and abdominal pain ten months before her medical consultation. The diagnosis of a right tympano-jugular glomus paraganglioma was based on cerebral magnetic resonance imaging and treated with radiotherapy.

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Breast cancer is the most frequent malignancy among women worldwide, including a wide range of histological subtypes, from typical expressions like invasive ductal carcinoma to less common variations like apocrine breast carcinoma. This document discusses the case of a 65-year-old female with apocrine breast cancer, who presented with a chronic mastodynia. This case highlights the importance of being aware of apocrine breast cancer.

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Adnexal carcinomas are rare cutaneous malignancies arising from the eccrine and apocrine sweat glands, follicles and sebaceous glands. They occur mainly in elderly people. We report the case of a patient treated for locally advanced apocrine adnexal carcinoma of the thigh, with a review of the literature.

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Cancer of the penis is a rare tumor that occurs in the elderly. Because of its rarity, it is often not diagnosed early, and its treatment poses difficulties for practicing oncologists. We report the case of an elderly patient treated for locally advanced squamous cell carcinoma (SCC) of the penis, with a review of the literature.

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Adenoid cystic carcinoma (ACC) of the vulva represents a highly uncommon type of female malignancy. Due to the absence of specific treatment guidelines, such cases are typically managed by the treatment protocols for vulvar cancer. Here, we report the case of a 52-year-old woman who presented with a painful right vulvar mass, leading to a diagnosis of ACC of the vulva after biopsy and immunohistochemical analysis.

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Paragangliomas (PGLs) are tumors that are rarely malignant; the majority of them are benign. Similar to pheochromocytoma, they develop from the autonomic nerve system. This system originates from neural crest cells and can undergo neoplastic transformation.

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Cerebral melanoma is often related to a secondary location of a cutaneous or mucosal melanoma. However, primary cerebral melanoma is a very rare clinical situation, representing less than 1% of all melanomas and 0.07% of all cerebral tumors.

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Lung cancer is one of the most common cancers in men, and is often diagnosed at the metastatic stage. It often leads to lung, bone, brain, liver, and adrenal metastases. However, unusual secondary locations are possible, such as skin metastases, which are often associated with a poor prognosis.

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Plasmacytoma of the skull base is a rare entity. We present a case of sphenoid plasmacytoma in a 51-year-old woman who had nasal obstruction, intermittent epistaxis, headaches, decreasing visual acuity, and diplopia. Computed Tomography (CT) scan and magnetic resonance imaging (MRI) showed a large heterogeneous, expansile lesion measuring 75 mm × 54 mm, centered on the sphenoidal bone and the clivus.

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Mediastinal Seminoma is one of the malignant germ cell tumors of the mediastinum. It is a rare tumor that represents only 1%-4% of mediastinal tumors. We report the case of a patient treated at the Oncology Center of Oujda for a pure primitive seminoma of the mediastinum, with a review of the literature to assess the epidemiological, clinical, therapeutic, and prognostic characteristics of this pathology.

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Hidradenocarcinomas or malignant hidradenomas are tumors developed from the sweat glands, in particular, the eccrine glands. It is a rare entity of skin tumors and frequently appears de novo with a slight female predominance and an average age of 50 years at diagnosis. We report the case of a 57-year-old woman treated for localized hidradenocarcinoma of the scalp, successfully managed by surgery and adjuvant radiotherapy.

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Botryoid sarcoma is a subtype of rhabdomyosarcoma affecting soft tissues and exceptionally the cervix. We here report the case of an 18-year-old female patient presenting to the emergency department with a feeling of pelvic heaviness, metrorrhagia and urinary retention. Gynecological examination showed budding mass of the uterine cervix.

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Hemangiopericytomas or solitary meningeal fibrous tumors are extremely rare mesenchymal tumors. They represent only 1.6% of all central nervous system tumors, occurring mainly in adults between 40 and 50 years of age with a slight male predominance.

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Primary vaginal sarcoma is a rare disease entity, reported in less than 3% of cases of vaginal cancers. We report the observation of a patient treated at the regional oncology center of Oujda in Morocco who is presented with a non-metastatic primary vaginal leiomyosarcoma of 20 cm. The treatment consisted of neoadjuvant chemotherapy, followed by hemostatic surgery with tumor resection limits, reinforced by radiotherapy and then a surgical resection with a tumor resection taking away the infiltrated part of the anterior face of the lower rectum and the realization of a left iliac colostomy whose resected tumor part limits were healthy.

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Osteosarcomas of the craniofacial bones account for less than 10% of all osteosarcomas. Primary osteosarcomas of the nasal cavity and paranasal sinus are rare localization (0.5%-8.

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Background: Monte Carlo simulation is generally appreciated as an extraordinary technique to investigate particle physics processes and interactions in nuclear medicine and Radiation Therapy. The present task validates a new methodology of Monte Carlo simulation based on the Multithreading technique to reduce CPU time to simulate a 6 MV photon beam provided by the Elekta Synergy MLCi2 platform medical linear accelerator treatment head utilizing TOpas version 3.6 Monte Carlo software and the Slurm Marwan cluster.

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